Rotary-cylinder steam-engine.



No. 662,467. Patentd Nov. 27, I900. G. 0. SANDERSON.

ROTARY CYLINDER STEAM ENGINE.

(Application filed Mar. 16, 1900.1

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GEORGE OLIVERSANDERSON, OF GRANT, IOWA.

ROTARY-CYLINDER STEAM-ENGINE.

SPECIFICATION forming part of Letters Patent No. 662,467, dated November27, 1900. Application filed March 16, 1900. semi No. 8,975. (No model.)

To aZZ whom it may concern:

Be it known that I, GEORGE OLIVER SAN- DERSON, of Grant township, countyof Oerro Gordo, State of Iowa, have invented a new and usefulImprovement in Steam Pulleys, of which the following is a specification.

My invention relates to rotary engines, and particularly to that classin which the cylinders rotate about a stationary shaft, so as to act asa pulley for transmitting power; and it has for its object an engine orpulley of the character which will utilize the force of the steam to thebest advantage and which will be of simple construction;

The invention consists in certain details of construction andarrangement of the parts, which I shall hereinafter specificallydescribe and claim.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which like characters of reference indicatecorresponding parts in all the views.

Figure 1 is a sectional view of my improved pulley, taken on the line 11 of Fig. 4. Fig. 2 is a vertical section on the line 2 2 of Fig. 1.Fig. 3 is a section on the line 3 3 of Fig. 4.. Fig. 4 is a centralvertical section, and Fig. 5 is a detail perspective view, of a portion'of a cylinder-head.

Referring to the drawings, A designates the stationary shaft on whichthe cylinder Bis rotatably mounted, said shaft being partially tubularto form passages for the admission and exhaust therethrough of the steamto and from the cylinder. For this purpose the shaft A is dividedlongitudinally by a partition A, joined solidly to diametricallyopposite portions of the shaft where the latter extends through thecylinder-heads B. The end A of the shaft is the feed or admission end,the steam passing through the admission-passage A and out into thecompartment 1 of the cylinder through the port A and the passage 0 inthe steam-chest O and out into the compartment 2 of the cylinder throughthe port A and a similar passage in the chest 0. Upon admission to thecompartment 1 and afterward to the compartment 2 the steam acts betweenthe abutments D and the pistons E,

the latter being providedwith elongated slots E, through which headedpins E on the flat face of the chests C and G are inserted, whereby thepistons are mounted to slide, and the pistons are further provided withrecesses E in their rear ends, forming guides embracing the blocks Esprings F, located between the blocks and the opposite ends of therecesses, serving to press the beveled forward ends of the pistonstightlyagainst thecylinder. Each of the cylinder-heads B has securedthereto a collar G, which surrounds the shaft, and has a semicircularflange G at its inner side, forming a cut-off for the ports A and A Thetwo flanges are placed diametrically opposite, so that it is understoodsteam is admitted alternately and not simultaneously to the twocompartments 1 and 2 of the cylinder B.

The steam alternately admitted between the abutments and the pistons ofeach compartment will drive the cylinder in the direction of the arrow ain Fig. 1, causing the beveled ends of the pistons to ride upon theinclined faces I) of the abutments, the steam exhausting through theexhaust-passages H in the steam-chests C and O, the ports H and H in theshaft, and out of the shaft through the passage H.

Suitable packing-rings R and R are fitted between the cylinder and itsheads and between the latter and the ends of the shaft.

A covering J, of asbestos or the like, surrounds the cylinder,whereby toprotect a belt from the heat within the same.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In an apparatus of the character described, a stationary tubularshaft having a partition dividing it longitudinally and formingadmission and exhaust passages opening at opposite ends of the shaft,the latter being further provided with admission and exhaust ports neareach end communicating with said passages, chests fixedly held on saidshaft and provided with opposite passages communicating with the portsin the shaft, and .a cylinder rotatably mounted on said shaft, saidcylinder being divided into compartments and havingdiametricallyarranged cut-offs, as set forth.

2. In an apparatus of the character described, a tubular shaft having apartition dividing it longitudinally into admission and exhaust passagesand having ports commun'icating with said passages, the said passagesopening at opposite ends of the shaft, astearnchest fixedly held on'saidshaft near each end thereof and having passages registering with saidports, springpressed slidable pistons mounted on said chests, a cylinderdivided into compartments rotatably mounted on said shaft and havinginclined abutments adapted to ride over said pistons, and adiametricallyarran'ged cut-off secured in each head of the cylinder, asset forth.

3. In an apparatus of the character described, the shaft, the chestfixedly held thereon, means for admitting and exhausting steam throughthe shaft and chest, a piston provided with an elongated slot throughwhich a headed pin, secured to the chest, extends, and also providedwith a recess in its rear end, a block secured to the chest and fittedin said recess, a spring located in the recess between the end wall ofthe same and the block, and a cylinder rotatably mounted on said shaftand having an abutment adapted to ride on said piston, as set forth.

GEORGE OLIVER SANDERSON.

Witnesses:

LEWIS S. SANDERSON, SANDY SANDERSON.

